THOC5
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THOC5 : a novel gene involved in HDL-cholesterol metabolism. / Keller, Maria; Schleinitz, Dorit; Förster, Julia; Tönjes, Anke; Böttcher, Yvonne; Fischer-Rosinsky, Antje; Breitfeld, Jana; Weidle, Kerstin; Rayner, Nigel W; Burkhardt, Ralph; Enigk, Beate; Müller, Ines; Halbritter, Jan; Koriath, Moritz; Pfeiffer, Andreas; Krohn, Knut; Groop, Leif; Spranger, Joachim; Stumvoll, Michael; Kovacs, Peter.
In: J LIPID RES, Vol. 54, No. 11, 11.2013, p. 3170-3176.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - THOC5
T2 - a novel gene involved in HDL-cholesterol metabolism
AU - Keller, Maria
AU - Schleinitz, Dorit
AU - Förster, Julia
AU - Tönjes, Anke
AU - Böttcher, Yvonne
AU - Fischer-Rosinsky, Antje
AU - Breitfeld, Jana
AU - Weidle, Kerstin
AU - Rayner, Nigel W
AU - Burkhardt, Ralph
AU - Enigk, Beate
AU - Müller, Ines
AU - Halbritter, Jan
AU - Koriath, Moritz
AU - Pfeiffer, Andreas
AU - Krohn, Knut
AU - Groop, Leif
AU - Spranger, Joachim
AU - Stumvoll, Michael
AU - Kovacs, Peter
PY - 2013/11
Y1 - 2013/11
N2 - Although numerous genes are known to regulate serum lipid traits, identified variants explain only a small proportion of the expected heritability. We intended to identify further genetic variants associated with lipid phenotypes in a self-contained population of Sorbs in Germany. We performed a genome-wide association study (GWAS) on LDL-cholesterol, HDL-cholesterol (HDL-C), and triglyceride (TG) levels in 839 Sorbs. All single-nucleotide polymorphisms with a P value <0.01 were subjected to a meta-analysis, including an independent Swedish cohort (Diabetes Genetics Initiative; n = ∼3,100). Novel association signals with the strongest effects were subjected to replication studies in an additional German cohort (Berlin, n = 2,031). In the initial GWAS in the Sorbs, we identified 14 loci associated with lipid phenotypes reaching P values <10⁻⁵ and confirmed significant effects for 18 previously reported loci. The combined meta-analysis of the three study cohorts (n(HDL) = 6041; n(LDL) = 5,995; n(TG) = 6,087) revealed a novel association for a variant in THOC5 (rs8135828) with serum HDL-C levels (P = 1.78 × 10⁻⁷; Z-score = -5.221). Consistently, the variant was also associated with circulating APOA1 levels in Sorbs. The small interfering RNA-mediated mRNA silencing of THOC5 in HepG2 cells resulted in lower mRNA levels of APOA1, SCARB1, and ABCG8 (all P < 0.05). We propose THOC5 to be a novel gene involved in the regulation of serum HDL-C levels.
AB - Although numerous genes are known to regulate serum lipid traits, identified variants explain only a small proportion of the expected heritability. We intended to identify further genetic variants associated with lipid phenotypes in a self-contained population of Sorbs in Germany. We performed a genome-wide association study (GWAS) on LDL-cholesterol, HDL-cholesterol (HDL-C), and triglyceride (TG) levels in 839 Sorbs. All single-nucleotide polymorphisms with a P value <0.01 were subjected to a meta-analysis, including an independent Swedish cohort (Diabetes Genetics Initiative; n = ∼3,100). Novel association signals with the strongest effects were subjected to replication studies in an additional German cohort (Berlin, n = 2,031). In the initial GWAS in the Sorbs, we identified 14 loci associated with lipid phenotypes reaching P values <10⁻⁵ and confirmed significant effects for 18 previously reported loci. The combined meta-analysis of the three study cohorts (n(HDL) = 6041; n(LDL) = 5,995; n(TG) = 6,087) revealed a novel association for a variant in THOC5 (rs8135828) with serum HDL-C levels (P = 1.78 × 10⁻⁷; Z-score = -5.221). Consistently, the variant was also associated with circulating APOA1 levels in Sorbs. The small interfering RNA-mediated mRNA silencing of THOC5 in HepG2 cells resulted in lower mRNA levels of APOA1, SCARB1, and ABCG8 (all P < 0.05). We propose THOC5 to be a novel gene involved in the regulation of serum HDL-C levels.
KW - Adolescent
KW - Adult
KW - Aged
KW - Aged, 80 and over
KW - Cholesterol, HDL/metabolism
KW - Cohort Studies
KW - Female
KW - Genome-Wide Association Study
KW - Germany/ethnology
KW - Hep G2 Cells
KW - Humans
KW - Male
KW - Meta-Analysis as Topic
KW - Middle Aged
KW - Nuclear Proteins/genetics
KW - Polymorphism, Single Nucleotide
KW - RNA, Messenger/genetics
KW - Young Adult
U2 - 10.1194/jlr.M039420
DO - 10.1194/jlr.M039420
M3 - SCORING: Journal article
C2 - 24023261
VL - 54
SP - 3170
EP - 3176
JO - J LIPID RES
JF - J LIPID RES
SN - 0022-2275
IS - 11
ER -